<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="UTF-8" />
		<meta http-equiv="X-UA-Compatible" content="IE=edge" />
		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
		<title>列表过滤</title>
		<script src="../../JS/vue.js"></script>
	</head>
	<body>
		<div id="root">
			<h2>人员列表</h2>
			<input type="text" placeholder="请输入名字" v-model="keyWord" />
			<ul>
				<li v-for="(p,index) of filPersons" :key="p.id">
					{{p.name}} - {{p.age}} - {{p.sex}}
				</li>
			</ul>
		</div>
		<script>
			Vue.config.productionTip = false //阻止 vue 在启动时产生提示
			//用watch实现
			//#region
			/* const vm = new Vue({
				el: '#root',
				data: {
					keyWord: '',
					persons: [
						{id: '001', name: '马冬梅', age: 18, sex: '女'},
						{id: '002', name: '周冬雨', age: 19, sex: '女'},
						{id: '003', name: '周杰伦', age: 20, sex: '男'},
						{id: '004', name: '温兆伦', age: 20, sex: '男'}
					],
					filPersons: []
				},
				watch: {
					// keyWord: {
					// 	immediate: true,
					// 	handler(val) {
					// 		this.filPersons = this.persons.filter(
					// 			p => p.name.indexOf(val) !== -1
					// 		)
					// 	}
					// }
					// keyWord(val) {
					// 	this.filPersons = this.persons.filter(
					// 		p => p.name.indexOf(val) !== -1
					// 	)
					// }
				}
			}) */
			//#endregion

			// 用computed
			const vm = new Vue({
				el: '#root',
				data: {
					keyWord: '',
					persons: [
						{id: '001', name: '马冬梅', age: 18, sex: '女'},
						{id: '002', name: '周冬雨', age: 19, sex: '女'},
						{id: '003', name: '周杰伦', age: 20, sex: '男'},
						{id: '004', name: '温兆伦', age: 20, sex: '男'}
					]
				},
				computed: {
					filPersons() {
						return this.persons.filter(p => p.name.indexOf(this.keyWord) !== -1)
					}
				}
			})
		</script>
	</body>
</html>
